Microleakage of Temporary Crowns with Different Cement gap | ||||
| Al-Azhar Journal of Dental Science | ||||
| Article 4, Volume 24, Issue 1, January 2021, Page 27-31 PDF (362.59 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ajdsm.2020.24275.1008 | ||||
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| Authors | ||||
Ahmed Yousef Elbieh   1; Hesham Ibrahim Othman2; Khaled Mohamed Haggag2
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| 1Al-Azhar University (Cairo-boys) | ||||
| 2Crown and Bridge Department, Faculty of Dental Medicine, Al-Azhar University(Boys- Cairo) Egypt | ||||
| Abstract | ||||
| Objective: To evaluate the effect of different cement gap on microleakage of PMMA crowns cemented with resin cement. Materials and Methods: Thirty natural human molar teeth were collected, the root of the teeth was sealed with a double layer of varnish for insulation to a level of 1 mm below the preparation margin, and mounted in an acrylic mold. Teeth were prepared through CNC, PMMA crowns fabricated by cad/cam. Samples were divided into 3 subgroups according to the cement gap(CG) (n=10): 25µm (CG25), 50µm (CG50), 100µm (CG100). PMMA crowns cemented with Breeze Self-Adhesive Resin Cement. Samples were thermocycled for 5000 cycles between two water baths at 5°C and 55°C with a dwell time of 20 seconds and 10 seconds of transfer time. Samples were immersed in methylene blue dye solution for 24 hours, then sectioned buccolingually. Dye penetration was assessed using a spectromicroscope, and then a score assessment was done for the microleakage. Results: The CG50 group scored the lowest median microleakage score, followed by CG100, and finally, CG25. The CG25 group; showed a statistically significantly higher median microleakage score than CG50 or CG100 groups. Conclusion: The cement gap has an effect on the microleakage of PMMA crowns cemented with self-adhesive resin cement. Keywords: Cement gap, Microleakage, PMMA, Resin cement | ||||
| Keywords | ||||
| Cement gap; Microleakage; PMMA; Resin cement | ||||
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